Momwe 720p ndi 1080i Alili Omwe Ndi Osiyana
720p ndi 1080i onse ali ndi tanthauzo lapamwamba la mavidiyo, koma ndi momwe kufanana kumathera. Pali kusiyana kwakukulu pakati pa ziwiri zomwe zingakhudze TV yomwe mumagula ndi zomwe mukuwonera TV.
- 720p ndi ma pixel 1,280 omwe amawonetsedwa pawindo pang'onopang'ono ndi ma pixel 720 omwe akuwonetsedwa pansi pazenera. Izi zimapereka mizere yopingasa 720 kapena mizere ya pixel yomwe imatumizidwa ku TV kapena chipangizo china chowonetsera pang'onopang'ono , kapena mzere uliwonse utatumizidwa ukutsatira wina (ndiko kuti "p" akuchokera). Chithunzi chonse (mizere 720 kapena mizere ya pixel) imatumizidwa 60 peresenti yachiwiri (kapena kawiri pa makumi atatu iliyonse). Chiwerengero cha mapikseli omwe akuwonetsedwa pawindo lonse la 720p ndi 921,600 (pang'ono zosakwana 1 megapixel mu mawu a kamera ya digito).
- 1080i amaimira pixelisi 1,920 okonzedwa kumbali ndi ma pixelisi 1,080 okonzedwa mozungulira. Izi zimapereka mizere yokwana 1,080 yopingasa (mizere ya pixel), yotumizidwa ku TV mosiyana (yotchedwa chizindikiro chotsutsana). M'mawu ena, mizere yonse yosamvetseka kapena mizere ya pixel imatumizidwa ku TV yoyamba, yotsatira mizere yonse kapena mizere ya pixel. Izi zikutanthawuza kuti 1080i, chifukwa imatulutsidwa, imangotumiza mizere 540 (kapena theka tsatanetsatane) iliyonse ya 60 lachiwiri, ndi zonse zomwe zinatumizidwa zaka makumi atatu zonse. Pamwamba pamtunda, 1080i amapanga tsatanetsatane woposa 720p, koma popeza chidziwitso chowonjezereka chimatumizidwa pa 1/30 chachiwiri, osati 1/60 chachiwiri, zinthu zofulumira zowonongeka ziwonetsanso zojambula zochepa - zomwe zingawonekere kuyang'ana ngati zowonongeka pamphepete kapena zowonongeka pang'ono.
- Chiwerengero cha pixels chili ndi chizindikiro chokwanira cha 1080i, kamodzi kamodzi kogwirizanitsa mizere kapena mizere ikuphatikizidwa, zonse 2,073,600. Komabe, kumbukirani kuti pafupi mapepala a 1,036,800 okha amatumizidwa pa 60 peresenti iliyonse.
Ngakhale kuti chiwerengero cha ma pixelisi cha 720p kapena 1080i chikuwonetseratu chikukhalabe nthawi zonse zowonekera pazenera, kukula kwa chinsalucho kumapereka chiwerengero cha pixel pa inchi .
720p, 1080i, ndi TV yanu
Mauthenga a HDTV ochokera ku TV yanu, chingwe, kapena satellite ndi 1080i (monga CBS, NBC, WB) kapena 720p (monga FOX, ABC, ESPN).
Komabe, ngakhale 720p ndi 1080i ndizo zikuluzikulu ziwiri zofalitsira ma HDTV, izo sizikutanthauza kuti mukuwona zosankhazo pawindo lanu la HDTV.
Ndikofunika kuzindikira kuti mizere 1080p (1920 x 1080 kapena mizere ya pixel imafufuzidwa pang'onopang'ono) siigwiritsidwe ntchito pawuniveshoni ya pa TV, koma imagwiritsidwa ntchito ndi ena opereka chingwe / satanala, mautumiki opatsirana pa intaneti, ndipo, ndithudi, 1080p ndi gawo la muyeso wa Blu-ray Disc .
Komanso, ziyenera kuwonetsedwera kuti ma TV ambiri omwe ali ndi ma TV 720p ali ndi chikhazikitso cha 1366x768, chomwe chiridi 768p. Komabe, kawirikawiri amalengezedwa ngati ma TV 720p. Musasokonezedwe, maselo awa onse adzalandira zikwangwani 720p ndi 1080i. Chimene TV ikuyenera kuchita ndi ndondomeko ( kuchepetsa ) chidziwitso chilichonse chomwe chikubwera ku chiwonetsero chake chowonetsera pixel 1366x768.
Chinthu china chofunika kuwonetsa ndi chakuti kuyambira LCD , OLED , Plasma , ndi DLP TV (Plasma ndi DLP TV zatha, koma zambiri zikugwiritsidwa ntchito) zingangowonetseratu zojambula pang'onopang'ono, sizikhoza kusonyeza chizindikiro cha 1080i.
Pazochitikazi, ngati chizindikiro cha 1080i chikuwonetsedwa kuti TV ikukweza chithunzi cha 1080i kuti ikhale 720p kapena 768p (ngati TV 720p kapena 768p), 1080p (ngati TV 1080p) , kapena 4K (ngati ndi 4K Ultra HD TV) .
Zotsatira zake, khalidwe la fano lomwe mumaliwona pazenera likudalira momwe pulojekiti ya TV ikugwirira ntchito - ma TV ena amachita bwino kuposa ena. Ngati pulosesa ya TV ikugwira ntchito yabwino, chithunzicho chidzawonetsa mpweya wosakanikirana ndipo sizidzakhala zooneka bwino zonse zowonjezera 720p ndi 1080i.
Komabe, chizindikiro chodziwika bwino kwambiri chakuti wopanga pulojekiti sakuchita ntchito yabwino ndikuyang'ana mbali iliyonse yokhotakhota pa zinthu zomwe zili mu fano. Izi zidzawonekera kwambiri pazowonjezera zizindikiro 1080i pamene purosesa ya ma TV imangofunika kuthetsa chigamulochi mpaka 1080p kapena mpaka 720p (kapena 768p), komanso iyenera kuchita ntchito yotchedwa "deinterlacing".
Deinterlacing imafuna kuti pulosesa ya TV iphatikize mizere yosamvetseka komanso mizere kapena pixel ya chithunzi chomwe chimalowa mkati 1080i kukhala chithunzi chokhazikika chomwe chiyenera kuwonetsedwa iliyonse yachisanu ndi chimodzi chachiwiri. Ena mapulosesa amachita izi bwino, ndipo ena samatero.
Mfundo Yofunika Kwambiri
Zomwe manambalawa ndi ndondomekozi zimatanthawuzira kwa inu ndikuti palibe kwenikweni monga LCD, OLED, Plasma, kapena DLP TV 1080i. Ngati pulogalamu ya TV yowonongeka ikufalitsidwa ngati TV ya "1080i", imatanthawuza kuti ngakhale idawonetsera chizindikiro cha 1080i - iyenera kuwonetsera chithunzi cha 1080i ku 720p kuti chiwonetsedwe. Ma TV 1080p, amatsatsa malonda monga ma TV 1080p kapena Full HD ndipo zizindikiro zopitilira 720p kapena 1080i ziwerengedwa ku 1080p kuti zisonyezedwe.
Kaya mutengapo chizindikiro cha 1080i pa TV 720p kapena 1080p , zomwe mumatha kuziwona pazowonekera ndi zotsatira za zinthu zambiri kuphatikizapo kuthetsa, kuphatikizapo kusinthidwa kwasankhulidwe / kuyendetsa kayendetsedwe kake , mtundu wogulitsa, zosiyana, kuwala, phokoso la kanema lakumbuyo ndi zojambulajambula , ndi kujambula mavidiyo ndi kukonza.
Kuwonjezera pamenepo, mogwirizana ndi kukhazikitsa kwa 4K Ultra HD TV, kupezeka kwa TV 1080p ndi 720p pamsika kwatsika. Ndi zochepa chabe, TV za 720p zakhala zikuyang'ana masentimita masentimita 32 ndizochepa - inde, simungapezepo ma TV ochulukitsa 1080p muzithunzi zazithunzi kapena zochepa, koma ndi ma TV 4K Ultra HD kukhala osakwera mtengo, chiwerengero cha ma TV 1080p mu masentimita 40 ndi masentimita akuluakulu akuwonetseranso akuchepa.